Software Engineer (Agent Core Infra)

Hinoki Security • San Francisco, CA

2d • Onsite

About The Position

AI is collapsing the cost of offense. What used to require a skilled exploit developer can increasingly be automated, and defenders are still working from tooling that was designed two decades ago: tools that produce endless lists of findings without telling anyone what actually matters or what to do about it.
Hinoki is building the AI-native platform that fixes this. We continuously map an enterprise's real exposure, figure out what is genuinely dangerous in the customer's specific environment, and drive the remediation through to verified resolution. Old scanners produce lists. We produce fixed problems.
We're backed by Andreessen Horowitz and led by a second-time security founder, most recently from Google. The platform is already in production at Fortune 500 enterprises.

Requirements

• Three to six years of engineering experience
• Experience with AI agents in production (not prototypes)
• Experience with autonomous systems with multi-step reasoning, tool use, memory, evaluation, and failure handling
• Distributed systems chops (shipped systems with real failure modes: leases, retries, idempotency, blast-radius reasoning)
• Cloud fluency (production depth in at least one of AWS, Azure, or GCP)
• Experience with AI-native workflow (Claude Code, Codex, or Cursor in daily loop)
• High agency (read a plan doc and ship, don't wait for tickets, fix what's broken regardless of whose code it is)
• Taste for small, reversible changes (know when to extract a helper and when to keep code inline)
• TypeScript and C++ experience (though engineering depth is valued more than specific languages)

Nice To Haves

• No security background required. We'll teach you the domain.

Responsibilities

• Lead the systems that orchestrate our research agents
• Develop the data layer that models a customer's environment in real time
• Build the verification surfaces that prove our agents' work is correct before anything reaches a customer
• Create the reporting surfaces where our hardwork translates to CISO-level impact

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed